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Delivers dependable power to your whole system with style

Kicker designed the KX800.5 5-channel amplifier to run your entire system, powering four speakers with 50 watts RMS each while driving a sub with up to 400 watts RMS. This reliable and compact KX Series rocker remains cool even when pushed hard, thanks to its high-mass heatsink, high-tech internal components, and efficient full-range Class-D amp technology. Not worried about rear speakers? You could also use this amp in 3-channel mode to send 200 watts RMS each to some high-performance components up front, and still run your sub with 400 watts.

Connects to virtually any system

Kicker employs their Fail-Safe Integration Technology (FIT™) to reject noise and stop any interference generated by your car's electronics, so you'll enjoy your music clean and pure. Speaker-level inputs make it possible to hook this amp up to almost any stereo, even a factory system. Kicker even thought to build in a 3-second turn-on delay, eliminating any annoying and potentially damaging turn-on pops.

Versatile controls behind the folding door

A folding door with magnetic latches gives you quick and easy access to your amp's controls. You can tune for almost any kind of speaker, as the steeply-sloped high- and low-pass filters offer a wide range of adjustment. The filter section for the rear channels can be set up for bandpass operation — where both the high- and low-pass filters are engaged to allow only the frequencies between them to play — for optimizing the signal for midbass drivers or other component speakers. The subwoofer channel includes a bass boost for adding some kick to your music, along with a subsonic filter that eliminates the extra-low, inaudible frequencies that only waste your sub's energy.

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

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Product Research

Features

Class D Amplifier Design: The Kicker KX800.5 is a Class D
amplifier with four full range channels and a single subwoofer channel. It uses
a digital switching power supply, resulting in high efficiency and less heat.
The Class D design also allows the KX800.5 to have a small footprint for increased
cargo space.

CEA-2006 Compliant: CEA-2006 is a system of testing and
measurement methods for mobile audio amplifiers. This voluntary standard advocates
a uniform method for measuring an amplifier's RMS power output and signal-to-noise
ratio. The criteria for measuring power uses a DC input voltage of 14.4 volts and
the RMS power output is measured into a 4Ω load, with 1% or less Total Harmonic
Distortion plus noise (THD+N), and over a frequency range of 20 Hz to 20 kHz (for
full range amplifiers). Signal-to-Noise ratio is measured in weighted absolute
decibels (dBA) at a reference of 1 watt into 4Ω. CEA-2006 allows consumers
to compare car amplifiers and receivers on an equal basis. Using CEA-2006 criteria,
the Kicker KX800.5 is rated at 50 Watts RMS x 4 channels plus 200 Watts RMS x 1
channel with a 75 dBA signal to
noise ratio.

Specifications: The manual also lists these non CEA-2006
compliant specifications:

Kicker Livin' Loud Certified Power: The amplifier comes with
a certificate that indicates the total maximum RMS power output of the particular
amplifier, along with the model number, serial number, and whether the amplifier
passed the total harmonic distortion, signal-to-noise ratio, and protection
circuit tests.

Auto Turn-On: The Auto Turn-On switch offers three options:

+12 V: The amp turns on when +12 volts
is applied to the remote terminal.

DC Offset: The amp turns on when a 6 volt
offset is detected on the signal inputs (from a speaker-level
source); in this mode the amp's remote terminal acts as a +12
volt output to turn on another component.

Audio: The amp turns on when an incoming
audio signal is detected; in this mode the amp's remote terminal
acts as a +12 volt output to turn on another component.

Subsonic Filter: The subwoofer amp also features a 24
dB/octave subsonic filter, continuously variable from 10 Hz to 80 Hz. Ultra-low
frequencies that cannot be reproduced by a subwoofer do not become sound, but
unnecessary oscillations, which affect sound by causing distortion. These
frequencies also waste amplifier power and can cause damage to speakers. The
built-in subsonic filter removes the signal below the set frequency to improve
the performance of the speakers by eliminating harmful distortion. The subsonic
filter crossover cannot by bypassed.

Protection Circuitry: The KX800.5 has protection circuitry
that will turn the amp off in the event of overheating, over voltage (power input),
under voltage (power input), short circuit (speaker output), and over current
(speaker output). If the Protection LED on the front side of the amp illuminates
red, the protection circuit has engaged and the amp will not play until the problem
is resolved.

KickEQ: The subwoofer section's KickEQ bass boost circuit is
continuously variable from 0 to +18 dB and centered at 40 Hz. The front and
rear amps do not have bass boost circuits.

Fader: When your source unit has discrete front and rear
outputs, set the fader switch to on. Turn the fader switch off to send a single
stereo input to both the front and rear amps.

Sub Input: If your source unit has a discrete subwoofer
output, set this switch to Sub. Otherwise set to Amp 2, and the subwoofer amp
will receive its signal from the same source as Amp 2.

KXRC Remote Bass Control: The KX800.5 comes with the KXRC
Remote Bass Control, which allows you to control the output level of the
subwoofer amplifier from the front of your vehicle. The wired remote can be
mounted under your dash. The supplied 20' cable, with RJ-25 phone plugs at each
end, connects the wired remote to the amplifier.

Connections

Power Connections: The power and ground connections are
set-screw terminals that will accommodate up to 4-gauge wire. The remote turn-on
set-screw terminal will accept up to 8-gauge wire. The included Allen-wrench is
required to loosen/tighten the terminals.

Note: The Amplifier is not equipped with
an internal fuse. An external 100-amp fuse (not included)
must be installed on the power wire. If the system has
only this amp and a wiring kit is used that includes a
fuse with a value other than 100-amps, the original should
be replaced with a 100-amp fuse.

Speaker Outputs: The Kicker KX800.5 is equipped with five pair
of set-screw terminals (left and right for Amp 1 and Amp 2, and a single
subwoofer output). The terminals will accommodate up to 8-gauge wire and are
loosened/tightened with the included Allen-wrench.

Dual Sensitivity Inputs: The KX800.5 has three sets of dual
sensitivity differential RCA inputs (Amp 1, Amp 2, and Sub). They will accept
either speaker-level (high) or RCA (low) signals from your car's head unit. A
high-level signal can be run from the head unit's speaker outputs to the stereo
RCA inputs of the amplifier using Speaker Wire to RCA adapters
(206KiSL,
sold separately). The Input Level Switch on the amp should be set to high when
using a speaker-level input, and low when using an RCA line-level input.

Remote Bass: Connect the included wired remote bass control
to the RJ-25 port on the amplifier.

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